Question # 1

The energy acquired by a mass of 1g moving with the speed of light is

Choose an answer

3 x 10⁸J

9 x 10¹³J

3 x 10¹³J

9 x 10¹⁶J

Alfa , beta and gamma rays are emitted from a radio-active substance

Choose an answer

spontaneously

when it is heated

when it is exposed to light

When it interacts with the other particle

Electrons are

Choose an answer

positive charged

negatively charged

massless

neutral

Radiation detector are used to

Choose an answer

measure intensity of radiation

measure energy of radiation

difference between different types of radiation

all the above

γ-rays behave like a particle because they explain the

Choose an answer

Compton effect

Photoelectric effect

Pair-production

all the above

Structure of the nucleus was explained by

Choose an answer

J.J Thomson

Bohr

Millikan

Rutherford

The rate of decay of a radioactive substance

Choose an answer

decrease exponentially with time

decreases linearly with time

increases linearly with time

increases exponentially with time

Charge on proton is

Choose an answer

1.59 x 10^-9C

1.59 x 10^-7C

-1.59 x 10^-19C

1.59 x 10^-19C

Examples of moderators used in a fission reactor is/are:

Choose an answer

Water

Heavy water

Carbon

Hydrocarbon

All of these

Different radioactive material have

Choose an answer

same half lives

different half lives

same mean lives

same total lives

The figure 1.007276μ shows the mass of an:

Choose an answer

Atom

Positron

Electron

Neutron

Proton

A mass spectrograph sort out

Choose an answer

molecules

atoms

elements

isotopes

Radioactivity is

Choose an answer

self disruptive activity

spontaneous activity

exhibited by all elements under proper conditions

both 'a' and 'b'

How many isotopes of helium are present?

Choose an answer

1

2

3

4

The missing mass which is converted to energy in the formation of nucleus, is called

Choose an answer

packing fraction

mass defect

binding energy

none of these

Neutron was disvovered by:

Choose an answer

Rutherford in 1920

Chadwick in 1922

Bohr in 1913

Compton in 1927

None of these

More Classes

Other Links

ECAT Physics Chapter 21 Nuclear Physics Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer